Hydrologist III

Weston & Sampson • Portsmouth, NH

2d

About The Position

Weston & Sampson is seeking a Hydrologist III or Engineer III for its Water discipline in a New England office. The role focuses on hydrologic and hydraulic modeling, ideally with an emphasis on urban stormwater. The Hydrologist conducts analyses and computer-aided evaluations of surface water systems, including watersheds, rivers, and lakes; supports the modeling and design of stormwater BMPs, green infrastructure, and LID projects; and prepares Letter of Map Revision applications. The position includes field work to gather measurements, survey information, and other observations for surface water model development. The Hydrologist works independently, communicates technical results to multidisciplinary teams and technical and lay audiences, and collaborates remotely with coworkers in other office locations. Some travel to client meetings and project sites in New England and other parts of the mid-Atlantic and Carolinas is required.

The role is part of Weston & Sampson, a 100% employee-owned interdisciplinary firm providing design, engineering, and environmental services. The company describes its work as improving communities through clean water, resilient infrastructure, and sustainable environments. It offers mentorship, diverse projects, advancement pathways, and a collaborative, inclusive culture.

Requirements

• Bachelor’s degree in Civil or Environmental Engineering, Hydrology, Hydrogeology, or a similar field.
• Experience with hydrologic modeling using HydroCAD or HEC-HMS and hydraulic modeling using HEC-RAS or SWMM.
• Experience with GIS analyses and mapping.
• General familiarity with surface water hydrology and hydraulics.
• Interest in evaluating and computer-aided modeling of surface water systems, including watersheds, rivers, and lakes.
• Excellent written and verbal communication skills.
• Strong organizational and time-management skills.
• Willingness to collaborate remotely with coworkers in other office locations.
• Valid driver’s license.
• The posting describes the role as requiring 2–5 years of experience, and later states that successful candidates will have 0–5 years of experience.

Nice To Haves

• Master’s degree in Civil or Environmental Engineering, Hydrology, Hydrogeology, or a similar field.
• Engineer-in-Training (EIT) certification, or ability to pass the exam within the first six months of employment.
• Experience modeling and designing stormwater BMPs.
• Experience modeling and designing green infrastructure and LID projects.

Responsibilities

• Conduct analyses and computer-aided evaluations of surface water systems, including watersheds, rivers, and lakes.
• Model and support the design of stormwater BMPs, green infrastructure, and LID projects.
• Prepare Letter of Map Revision applications.
• Develop proficiency with HydroCAD, HEC-HMS, HEC-RAS, and PCSWMM.
• Work independently and communicate results effectively to a multidisciplinary team.
• Prepare clear and concise written and verbal summaries of technical material for technical and lay audiences.
• Conduct field work to gather measurements, survey information, and other observations to support surface water model development.
• Travel to client meetings and project sites, including locations in New England and the mid-Atlantic and Carolinas.
• Collaborate remotely with coworkers in other office locations.

Benefits

• Meaningful work contributing to projects that protect and enhance natural and built environments.
• Employee ownership and shared success.
• Mentorship, diverse projects, and career advancement pathways.
• Flexible workplace.
• Collaborative culture that values inclusion and recognition.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level